I had the best run in nearly a month this morning. A strange calmness came over me halfway through the run, something I've never felt before. It was early and my limbs were still a bit drowsy when something switched in my brain and I was able to maintain a nice, steady pace. To say the least, this feeling was a wonderful surprise. Switching back to a run/walk of 2 1/2 minutes running and 1 minute walking seems to have been the right decision.